Influence of water storage time on the bond strength of etch-and-rinse and self-etching adhesive systems.
The purpose of this study was to evaluate comparatively the shear bond strength (SBS) of etch-and-rinse (Adper Scotch Bond Multi Purpose--ASBMP and Adper Single Bond 2--ASB2) and self-etching (AdheSe--AD and Adper Prompt--AP) adhesive systems after short- and long-term water storage. Eighty bovine teeth were randomly assigned to 4 groups (n=20, 10 teeth for 24 h and 10 for 6 months). After surface treatment, composite resin cylinders were made with Tetric Ceram using a bisected metallic matrix. The specimens were stored in distilled water at 37 degrees C for either 24 h or 6 months. After these periods, shear strength was assessed in a universal testing machine (0.5 mm/min). Data were submitted to ANOVA and F test at 5% significance level. Mean SBSs (MPa) for ASBMP (10.03 +/- 3.78) and ASB2 (6.10 +/- 2.67) showed no statistically significant differences (p>0.05) between times. The self-etching systems did not differ significantly from each other within the 24-h period, but significant difference was found for AD (1.37 +/- 0.64) after 6 months of water storage. In conclusion, the tested etch-and-rinse systems had a better performance in terms of bond durability over time than the self-etching systems.
Dantas
Darlene Cristina Ramos Eloy
DC
Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil.
Ribeiro
Ana Isabella Arruda Meira
AI
Lima
Lúcia Helena Marques de Almeida
LH
de Lima
Marcelino Guedes
MG
Guênes
Gymenna Maria Tenório
GM
Braz
Ana Karla Souza
AK
Braz
Rodivan
R
D000134:Acid Etching, Dental / Q000379:methods*; D000180:Acrylic Resins / Q000737:chemistry; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D008422:Materials Testing; D010755:Organophosphates / Q000737:chemistry; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry; D033081:Shear Strength; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry*
D000180:Acrylic Resins; C489662:AdheSE cement; C489661:Adper Prompt Self-Etch; D003188:Composite Resins; D017220:Dentin-Bonding Agents; D010755:Organophosphates; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; C121818:Tetric ceram; C115612:single bond; D014867:Water; D017438:Bisphenol A-Glycidyl Methacrylate